7 months old baby can eat egg yolk, but if the baby is allergic to egg yolk, it is not recommended to eat. 6 months of the baby can be fed in addition to breastfeeding, began to add complementary feeding, you can give priority to add iron-rich foods, such as formula, iron-containing emissions of rice flour, vegetable puree, fruit puree, etc.; to 7 months when you can increase the yolk of eggs and other complementary foods, it is recommended that the yolk of the yolk into the yolk of puree fed to the baby to eat. Feed the baby complementary foods, pay attention not to put a small spoon directly into the baby’s mouth, so as not to make the baby have a sense of suffocation, to try a little bit, slowly practicing, depending on the baby’s situation to increase the number of times and the number of meals. When feeding egg yolks, we should pay attention to whether the baby has food allergies, if there are vomiting, eczema and other adverse reactions after feeding, we need to stop feeding, and wait for the symptoms to disappear and then try to feed a small amount, if there are still adverse reactions, we should consult a doctor as soon as possible. Those who are clearly allergic to it are prohibited from consuming egg yolk.